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Increasing load / demand

Merry Christmas

OK Sparky 93

Senior Member
Location
Iridea14Strat
Occupation
Electrician
I don’t think I have ever used 220.83 and following, however if I did I probably did it wrong.

Customer wants to add a shop. A split system may be the largest load in the shop but IDK.
Existing has a heat pump.

If trying to determine if there is enough juice, is Table 220.83 what is used?

100% AC
100% heat
8KVA of all other loads (connected) 100%

Freezer, fridge, micro. etc or 1500 x2 SA
40% of remainder

Any guidance would be appreciated.
 

OK Sparky 93

Senior Member
Location
Iridea14Strat
Occupation
Electrician
After reading again!

So the article says the table shall be used for existing and new loads. What if you don’t know a 100%

If I am reading and understanding correctly,
It’s a basic load calculation, adding in the requirements of Table 220.83(B)

How would you figure the load for a new shop that is just an idea in one’s head?

Why do you think or know that it is required to figure 100% of both heat and air?
 
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